That's the BEST way to do them IMO too.
I have NO idea why anyone would ever dip a car. When you dip a car ALL the sealer and anti-rattle adhesive comes out from all the panels (cowl, roof, firewall, ect.) and you can NEVER get it back in there. Blasting a car (when done by a professional that knows what they are doing) is far superior to any other method of preparing a car for a restoration.
This is the first step in any restoration in my opinion....